So over the weekend I tried to show some family some photos and videos and it was total fail. Photos wouldn't load when selected from the main screen, however, if I went into the "Photos" library I could choose them and they would work.

Also, when I tried to play videos (taken from an iPhone) they would not play and if they did they were upside down or sideways for some reason. When they wouldn't play the screen would get blocky and green and no image could be seen. The video play fine on iOS and MacOS.